diff --git a/test/shaping/run-tests.py b/test/shaping/run-tests.py
index 34ca2fdc3..27b4357c1 100755
--- a/test/shaping/run-tests.py
+++ b/test/shaping/run-tests.py
@@ -67,7 +67,7 @@ for filename in args:
 
 		fontfile, options, unicodes, glyphs_expected = line.split (":")
 		if fontfile.startswith ('/') or fontfile.startswith ('"/'):
-			if s.name == 'nt': # Skip on Window
+			if os.name == 'nt': # Skip on Window
 				continue
 
 			fontfile, expected_hash = fontfile.split('@')